Performance analysis of semi-active cab’s hydraulic system of the vibratory roller using optimal fuzzy-PID control

In order to evaluate the performance of semi-active cab’s hydraulic mounts(SHM)of the off-road vibratory roller with the optimal fuzzy-PID(proportional integral derivative)control,a nonlinear dynamic model of the vehicle interacting with off-road terrains is established based on Matlab/Simulink software.The weighted root-mean-square(RMS)acceleration responses of the driver’s seat heave and the cab’s pitch angle are chosen as objective functions.The SHM is then optimized and analyzed via the optimal fuzzy-PID control under different operation conditions.The simulations results show that the driver’s ride comfort and the cab shaking are greatly affected by the off-road terrains under various operating conditions of the vehicle,especially at the speed from 8 to 12 km/h on a very poor terrain surface of Grenville soil ground under the vehicle travelling.With SHM using the optimal fuzzy-PID control,the driver’s ride comfort and the cab shaking are clearly improved under various operation conditions of the vehicle,particularly at the speed from 6 to 7 km/h of the vehicle traveling.

浅谈大庆油田油气物联网建设的设计思路

大庆油田数字化井数占总井数的26.6%,中小型站场占7.9%,大型战场占7.1%,且大庆油田油气物联网建设形式多样,建设规模仍处于较低水平。本文介绍了国内油田、大庆油田物联网建设情况,从地面系统优化、无线通信技术等方面,探讨了大庆油田油气物联网建设的设计思路,经过推广运用后,可提升生产管理效率、助推生产组织方式的转变等,将切实解决油田生产面临的人员短缺、数据不准确、不可靠等实际问题。